The inquiry, carried out by the National Crime Agency on behalf of North Wales Police, is largely underwritten by the government.
The Home Office has paid 85 per cent of the cost — leaving the North Wales force with a bill of £550,000 up to March 2016.
A further £278,000 was spent by the National Crime Agency.
Rebecca obtained the figures from North Wales Police under the Freedom of Information Act.
Operation Pallial is still active and is forecast to cost a further £890,000 in 2016-17.
The final bill is likely to top £5 million.
This is in addition to the £3 million spent by the Macur Review of the 1996-2000 North Wales Child Abuse Tribunal.
SO FAR eight men have been convicted and seven have gone to prison as a result of Operation Pallial.
One was gaoled for life and the others for a total of 43 years and 9 months.
John Ernest Allen
In 2014 John Allen, the former head of the private Bryn Alyn Community complex in Wrexham, was sentenced to life for sexually abusing 19 children in the 1970s and 1980s.
It was his second conviction — in 1995 he was gaoled for six years for abusing six residents of Bryn Alyn.
Allen is the most prolific child abuser in the North Wales scandal.
The former head of Gatewen Hall, part of the Bryn Alyn Community, was gaoled for 9 months in April this year.
He admitted possessing 51 indecent images of adults and animal engaging in sexual acts.
In June 2015 he was acquitted of two counts of historic indecent assault.
In 1999 he was gaoled for eight years for a serious sexual assault on a boy, an indecent assault on another boy and several counts of child cruelty.
Keith Alan Evans
The former care-worker at the Bryn Alyn Community was given an eight months suspended sentence in March 2016 for a physical assault on a resident in 1983.
He was cleared of physically assaulting six other boys.
A serial sex offender, Cooke was gaoled in October 2015 for 14 years on 15 counts of indecent and sexual assault.
The court heard that five vulnerable young boys were lured to his home in Wrexham and plied with alcohol and other drugs before being abused by Cooke and others.
Cooke has used many aliases during his long career — he now calls himself Mark Grainger.
He has convictions for child abuse stretching back to the 1970s.
The former Wrexham publican, an associate of Gary Cooke, was sent to prison for 10 years on eight counts of indecent and sexual assault.
An ex-local radio reporter, Norry was another of those involved in Cooke’s paedophile ring.
He was gaoled for 11 years on six counts of indecent and sexual assault.
Gaoled for three and a half years on one count of sexually abusing a boy at Gary Cooke’s home.
The former Metropolitan Police officer was gaoled for four and a half years on two charges of indecent assault.
Huxley was working as a civilian at Wrexham Barracks at the time of the offences.
THE CPS are considering files on a further 20 suspects.
Operation Pallial continues to investigate 100 historic abuse allegations.
Published: 11 June 2016
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